/* Copyright (c) 2014, Dmitry Starzhynskyi
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

package net.sf.dvstar.kidsdialer.data;

import java.util.HashMap;
import java.util.Map;

import android.database.MatrixCursor;

public class ContactMatrixCursor extends MatrixCursor {
	private Map<String, Integer> mColumnNameMap;
	private  String[] mColumns;
	
	
	public ContactMatrixCursor(String[] columnNames) {
		super(columnNames);
		this.mColumns = columnNames;
	}

	public ContactMatrixCursor(String[] columnNames, int initialCapacity) {
		super(columnNames, initialCapacity);
		this.mColumns = columnNames;
	}

	@Override
    public int getColumnIndex(String columnName) {
		int index = -1;
		
        // Create mColumnNameMap on demand
        if (mColumnNameMap == null) {
            String[] columns = mColumns;
            int columnCount = columns.length;
            HashMap<String, Integer> map = new HashMap<String, Integer>(columnCount, 1);
            for (int i = 0; i < columnCount; i++) {
                map.put(columns[i], i);
            }
            mColumnNameMap = map;
        }
        Integer i = mColumnNameMap.get(columnName);
        if (i != null) {
        	index =  i.intValue();
        }
        
		return index;
    }
	
}
